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Franzoni G, Mecocci S, De Ciucis CG, Mura L, Dell’Anno F, Zinellu S, Fruscione F, De Paolis L, Carta T, Anfossi AG, Dei Guidici S, Chiaradia E, Pascucci L, Oggiano A, Cappelli K, Razzuoli E. Corrigendum: Goat milk extracellular vesicles: immuno-modulation effects on porcine monocyte-derived macrophages in vitro. Front Immunol 2023; 14:1247751. [PMID: 37497219 PMCID: PMC10368392 DOI: 10.3389/fimmu.2023.1247751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/28/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fimmu.2023.1209898.].
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Affiliation(s)
- Giulia Franzoni
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Samanta Mecocci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Chiara Grazia De Ciucis
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Lorena Mura
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari, Italy
| | - Filippo Dell’Anno
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Susanna Zinellu
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Floriana Fruscione
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Livia De Paolis
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Tania Carta
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
| | - Antonio G. Anfossi
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
| | - Silvia Dei Guidici
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | | | - Luisa Pascucci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Annalisa Oggiano
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Katia Cappelli
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Elisabetta Razzuoli
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
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Franzoni G, Mecocci S, De Ciucis CG, Mura L, Dell’Anno F, Zinellu S, Fruscione F, De Paolis L, Carta T, Anfossi AG, Dei Guidici S, Chiaradia E, Pascucci L, Oggiano A, Cappelli K, Razzuoli E. Goat milk extracellular vesicles: immuno-modulation effects on porcine monocyte-derived macrophages in vitro. Front Immunol 2023; 14:1209898. [PMID: 37469517 PMCID: PMC10352104 DOI: 10.3389/fimmu.2023.1209898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 05/26/2023] [Indexed: 07/21/2023] Open
Abstract
Introduction Extracellular vesicles (EVs) are nanometric-membrane-bound sub-cellular structures, which can be recovered from milk. Milk EVs have drawn increasing interest due to their potential biomedical applications, therefore it is important to investigate their impact on key immune cells, such as macrophages. Methods In this work, the immunomodulatory effects of goat milk EVs on untreated (moMФ) and classically activated (moM1) porcine monocyte-derived macrophages were investigated using flow cytometry, ELISA, and gene expression assays. Results These particles were efficiently internalized by macrophages and high doses (60 mg protein weight) triggered the upregulation of MHC I and MHC II DR on moMФ, but not on moM1. In moMФ, exposure to low doses (0.6 mg) of mEVs enhanced the gene expression of IL10, EBI3, and IFNB, whereas high doses up-regulated several pro-inflammatory cytokines. These nanosized structures slightly modulated cytokine gene expression on moM1. Accordingly, the cytokine (protein) contents in culture supernatants of moMФ were mildly affected by exposure to low doses of mEVs, whereas high doses promoted the increased release of TNF, IL-8, IL-1a, IL-1b, IL-1Ra, IL-6, IL-10, and IL-12. The cytokines content in moM1 supernatants was not critically affected. Discussion Overall, our data support a clinical application of these molecules: they polarized macrophages toward an M1-like phenotype, but this activation seemed to be controlled, to prevent potentially pathological over-reaction to stressors.
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Affiliation(s)
- Giulia Franzoni
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Samanta Mecocci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Chiara Grazia De Ciucis
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Lorena Mura
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari, Italy
| | - Filippo Dell’Anno
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Susanna Zinellu
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Floriana Fruscione
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Livia De Paolis
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
| | - Tania Carta
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
| | - Antonio G. Anfossi
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
| | - Silvia Dei Guidici
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | | | - Luisa Pascucci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Annalisa Oggiano
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Katia Cappelli
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Elisabetta Razzuoli
- National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Genova, Italy
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Franzoni G, Mura L, Razzuoli E, De Ciucis CG, Fruscione F, Dell'Anno F, Zinellu S, Carta T, Anfossi AG, Dei Giudici S, Graham SP, Oggiano A. Heterogeneity of Phenotypic and Functional Changes to Porcine Monocyte-Derived Macrophages Triggered by Diverse Polarizing Factors In Vitro. Int J Mol Sci 2023; 24. [PMID: 36902099 DOI: 10.3390/ijms24054671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023] Open
Abstract
Swine are attracting increasing attention as a biomedical model, due to many immunological similarities with humans. However, porcine macrophage polarization has not been extensively analyzed. Therefore, we investigated porcine monocyte-derived macrophages (moMΦ) triggered by either IFN-γ + LPS (classical activation) or by diverse "M2-related" polarizing factors: IL-4, IL-10, TGF-β, and dexamethasone. IFN-γ and LPS polarized moMΦ toward a proinflammatory phenotype, although a significant IL-1Ra response was observed. Exposure to IL-4, IL-10, TGF-β, and dexamethasone gave rise to four distinct phenotypes, all antithetic to IFN-γ and LPS. Some peculiarities were observed: IL-4 and IL-10 both enhanced expression of IL-18, and none of the "M2-related" stimuli induced IL-10 expression. Exposures to TGF-β and dexamethasone were characterized by enhanced levels of TGF-β2, whereas stimulation with dexamethasone, but not TGF-β2, triggered CD163 upregulation and induction of CCL23. Macrophages stimulated with IL-10, TGF-β, or dexamethasone presented decreased abilities to release proinflammatory cytokines in response to TLR2 or TLR3 ligands: IL-10 showed a powerful inhibitory activity for CXCL8 and TNF release, whereas TGF-β provided a strong inhibitory signal for IL-6 production. While our results emphasized porcine macrophage plasticity broadly comparable to human and murine macrophages, they also highlighted some peculiarities in this species.
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Abstract
Oral cancer is a common malignancy worldwide, with high disease-related death rates. Oral squamous cell carcinoma (OSCC) accounts for more than 90% of oral tumors, with surgical management remaining the treatment of choice. However, advanced and metastatic OSCC is still incurable. Thus, emphasis has been given lately in understanding the complex role of the oral tumor microenvironment (TME) in OSCC progression, in order to identify novel prognostic biomarkers and therapeutic targets. Tumor associated macrophages (TAMs) constitute a major population of the OSCC TME, with bipolar role in disease progression depending on their activation status (M1 vs. M2). Here, we provide an up to date review of the current literature on the role of macrophages during oral oncogenesis, as well as their prognostic significance in OSCC survival and response to standard treatment regimens. Finally, we discuss novel concepts regarding the potential use of macrophages as targets for OSCC immunotherapeutics and suggest future directions in the field.
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Affiliation(s)
- Eleni Marina Kalogirou
- Department of Oral Medicine and Pathology, Faculty of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos I Tosios
- Department of Oral Medicine and Pathology, Faculty of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
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Swanson-Mungerson M, Williams PG, Gurr JR, Incrocci R, Subramaniam V, Radowska K, Hall ML, Mayer AMS. Biochemical and Functional Analysis of Cyanobacterium Geitlerinema sp. LPS on Human Monocytes. Toxicol Sci 2019; 171:421-430. [PMID: 31271425 PMCID: PMC6760288 DOI: 10.1093/toxsci/kfz153] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/20/2019] [Accepted: 06/20/2019] [Indexed: 12/15/2022] Open
Abstract
Cyanobacterial blooms are an increasing source of environmental toxins that affect both human and animals. After ingestion of cyanobacteria, such as Geitlerinema sp., toxins and lipopolysaccharide (LPS) from this organism induce fever, gastrointestinal illness, and even death. However, little is known regarding the effects of cyanobacterial LPS on human monocytes after exposure to LPS upon ingestion. Based on our previous data using Geitlerinema sp. LPS (which was previously named Oscillatoria sp., a genus belonging to the same order as Geitlerinema), we hypothesized that Geitlerinema sp. LPS would activate human monocytes to proliferate, phagocytose particles, and produce cytokines that are critical for promoting proinflammatory responses in the gut. Our data demonstrate that Geitlerinema sp. LPS induced monocyte proliferation and TNF-α, IL-1, and IL-6 production at high concentrations. In contrast, Geitlerinema sp. LPS is equally capable of inducing monocyte-mediated phagocytosis of FITC-latex beads when compared with Escherichia coli LPS, which was used as a positive control for our experiments. In order to understand the mechanism responsible for the difference in efficacy between Geitlerinema sp. LPS and E. coli LPS, we performed biochemical analysis and identified that Geitlerinema sp. LPS was composed of significantly different sugars and fatty acid side chains in comparison to E. coli LPS. The lipid A portion of Geitlerinema sp. LPS contained longer fatty acid side chains, such as C15:0, C16:0, and C18:0, instead of C12:0 found in E. coli LPS which may explain the decreased efficacy and toxicity of Geitlerinema sp. LPS in comparison to E. coli LPS.
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Affiliation(s)
- Michelle Swanson-Mungerson
- Department of Microbiology and Immunology, College of Graduate Studies, Midwestern University, Downers Grove, Illinois 60515
| | - Philip G Williams
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
| | - Joshua R Gurr
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
| | - Ryan Incrocci
- Department of Microbiology and Immunology, College of Graduate Studies, Midwestern University, Downers Grove, Illinois 60515
| | | | | | - Mary L Hall
- Department of Pharmacology, College of Graduate Studies, Midwestern University, Downers Grove, Illinois 60515
| | - Alejandro M S Mayer
- Department of Pharmacology, College of Graduate Studies, Midwestern University, Downers Grove, Illinois 60515
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Ashley JW, Hancock WD, Nelson AJ, Bone RN, Tse HM, Wohltmann M, Turk J, Ramanadham S. Polarization of Macrophages toward M2 Phenotype Is Favored by Reduction in iPLA2β (Group VIA Phospholipase A2). J Biol Chem 2016; 291:23268-23281. [PMID: 27650501 DOI: 10.1074/jbc.m116.754945] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 11/06/2022] Open
Abstract
Macrophages are important in innate and adaptive immunity. Macrophage participation in inflammation or tissue repair is directed by various extracellular signals and mediated by multiple intracellular pathways. Activation of group VIA phospholipase A2 (iPLA2β) causes accumulation of arachidonic acid, lysophospholipids, and eicosanoids that can promote inflammation and pathologic states. We examined the role of iPLA2β in peritoneal macrophage immune function by comparing wild type (WT) and iPLA2β-/- mouse macrophages. Compared with WT, iPLA2β-/- macrophages exhibited reduced proinflammatory M1 markers when classically activated. In contrast, anti-inflammatory M2 markers were elevated under naïve conditions and induced to higher levels by alternative activation in iPLA2β-/- macrophages compared with WT. Induction of eicosanoid (12-lipoxygenase (12-LO) and cyclooxygenase 2 (COX2))- and reactive oxygen species (NADPH oxidase 4 (NOX4))-generating enzymes by classical activation pathways was also blunted in iPLA2β-/- macrophages compared with WT. The effects of inhibitors of iPLA2β, COX2, or 12-LO to reduce M1 polarization were greater than those to enhance M2 polarization. Certain lipids (lysophosphatidylcholine, lysophosphatidic acid, and prostaglandin E2) recapitulated M1 phenotype in iPLA2β-/- macrophages, but none tested promoted M2 phenotype. These findings suggest that (a) lipids generated by iPLA2β and subsequently oxidized by cyclooxygenase and 12-LO favor macrophage inflammatory M1 polarization, and (b) the absence of iPLA2β promotes macrophage M2 polarization. Reducing macrophage iPLA2β activity and thereby attenuating macrophage M1 polarization might cause a shift from an inflammatory to a recovery/repair milieu.
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Affiliation(s)
- Jason W Ashley
- From the Department of Biology, Eastern Washington University, Cheney, Washington 99004
| | - William D Hancock
- Department of Cell, Developmental, and Integrative Biology.,Comprehensive Diabetes Center, and
| | - Alexander J Nelson
- Department of Cell, Developmental, and Integrative Biology.,Comprehensive Diabetes Center, and
| | - Robert N Bone
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, and
| | - Hubert M Tse
- Comprehensive Diabetes Center, and.,Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama 35294
| | - Mary Wohltmann
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - John Turk
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Sasanka Ramanadham
- Department of Cell, Developmental, and Integrative Biology, .,Comprehensive Diabetes Center, and
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Chechushkov AV, Kozhin PM, Zaitseva NS, Lemza AE, Men'shchikova EB, Troitskii AV, Shkurupy VA. Oxidized Dextran Enhances Alternative Activation of Macrophages in Mice of Opposite Lines. Bull Exp Biol Med 2016; 160:783-6. [PMID: 27165062 DOI: 10.1007/s10517-016-3309-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Indexed: 01/22/2023]
Abstract
Differences in peritoneal macrophage polarization in mice of opposite lines CBA and C57Bl/6 and the effects of 60 kDa oxidized dextran were studied. Macrophages of C57Bl/6 mice demonstrated a phenotype close to M1, with increasing expression of CD86 costimulatory molecule and unchanged CD206 expression in response to activation. Macrophages of CBA mice demonstrated higher plasticity in response to activating agents; expression of the markers increased irrespectively on stimulated receptor (TLR-4 or mannose receptor) and both CD86 (classical activation) and CD206 (alternative activation) increased. Macrophage response to addition of oxidized dextran (60 kDa) to the culture medium could be characterized as potentiation of their alternative activation: expression of CD86 in CBA mice in response to LPS and LPS+IL-4 and in C57Bl/6 mice in response to IFN-γ and LPS+IFN-γ decreased, while expression of CD206 by intact macrophages of CBA mice and by macrophages stimulated by IFN-γ and IL-4 increased under the effect of 60 kDa oxidized dextran.
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Affiliation(s)
- A V Chechushkov
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia
| | - P M Kozhin
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia
| | - N S Zaitseva
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia
| | - A E Lemza
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia
| | - E B Men'shchikova
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia.
| | - A V Troitskii
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia
| | - V A Shkurupy
- Research Institute of Experimental and Clinical Medicine, Novosibirsk, Russia.,Novosibirsk State Medical University, Ministry of Health of the Russian Federation, Novosibirsk, Russia
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Mayer AMS, Murphy J, MacAdam D, Osterbauer C, Baseer I, Hall ML, Feher D, Williams P. Classical and Alternative Activation of Cyanobacterium Oscillatoria sp. Lipopolysaccharide-Treated Rat Microglia in vitro. Toxicol Sci 2016; 149:484-95. [PMID: 26609141 PMCID: PMC4900220 DOI: 10.1093/toxsci/kfv251] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The purpose of this investigation was to test the hypothesis that an in vitro exposure to cyanobacterium Oscillatoria sp. Lipopolysaccharide (LPS) might result in classical and alternative activation of rat neonatal microglia. Using Escherichia coli LPS-primed microglia as a positive control, this study revealed that treatment of rat microglia with Oscillatoria sp. LPS for 17 h in vitro resulted in both classical and alternative activation as well as concomitant pro-inflammatory and anti-inflammatory mediator release, in a concentration-dependent manner: (1) treatment with 0.1-10 000 ng/ml Oscillatoria sp. LPS resulted in minimal lactic dehydrogenase (LDH) release, induced concentration-dependent and statistically significant O2 (-) generation, matrix metalloproteinase-9 (MMP-9) release, generation of the cytokines tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), and the chemokines macrophage inflammatory protein-2 (MIP-2/CXCL2), interferon γ-induced protein 10 kDa (IP-10/CXCL-10), (MIP-1α/CCL3), monocyte chemotactic protein-1 (MCP-1/CCL2), regulated on activation, normal T cell expressed and secreted (RANTES/CCL5), and the alternative activation cytokine IL-10; (3) in contrast, treatment with 100 000 ng/ml Oscillatoria sp. LPS appeared to damage the microglia cell membrane, because it resulted in minimal O2 (-) generation, statistically significant LDH release, and a decrease in the generation of all the cytokines and chemokines investigated, with the exception of IL-1α and cytokine-induced neutrophil chemoattractant 1 (CINC-1/CXCL1) generation, which was increased. Thus, our results provide experimental support for our working hypothesis, namely that Oscillatoria sp. LPS induces classical and alternative activation of rat brain microglia in vitro in a concentration-dependent manner, namely 0.1-10 000 ng/ml Oscillatoria sp. LPS, when microglia cells were shown to be viable. Furthermore, should cyanobacterium Oscillatoria sp. LPS gain entry into the CNS, our findings suggest that classical and alternative activation of rat brain microglia in vivo, might lead to concomitant mediator release that could result in an interplay between neuroinflammation and neural repair in a concentration-dependent manner.
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Affiliation(s)
| | - Joseph Murphy
- Biomedical Sciences Program, College of Health Sciences, Midwestern University, Downers Grove, Illinois 60515; and
| | - David MacAdam
- Biomedical Sciences Program, College of Health Sciences, Midwestern University, Downers Grove, Illinois 60515; and
| | - Christopher Osterbauer
- Biomedical Sciences Program, College of Health Sciences, Midwestern University, Downers Grove, Illinois 60515; and
| | - Imaan Baseer
- Biomedical Sciences Program, College of Health Sciences, Midwestern University, Downers Grove, Illinois 60515; and
| | - Mary L Hall
- *Department of Pharmacology, Chicago College of Osteopathic Medicine and
| | - Domonkos Feher
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96882
| | - Phillip Williams
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96882
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Ligacheva AA, Danilets MG, Trofimova ES, Sherstoboev EY, Zhdanov VV, Guriev AM, Belousov MV, Yusubov MS, Korzh AP, Krivoshchekov SV, Dygai AM. Effects of Water-Soluble Polysaccharides with Different Chemical Structure, Isolated from Acorus calamus L. and Trifolium pratense L., on Nitric Oxide Production: A Screening Study. Bull Exp Biol Med 2016; 160:330-5. [PMID: 26742749 DOI: 10.1007/s10517-016-3163-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 01/03/2023]
Abstract
Screening study of the effects of sweet flag (Acorus calamus L.) rhizome and clover (Trifolium pratense L.) aerial part on the production of NO by mouse macrophages was carried out. The polysaccharides were separated by ion exchange chromatography into fractions differing by monomeric composition and ramification type and were used in concentrations of 20, 40, and 100 μg/ml. Four fractions of Acorus calamus L. (PSF-101, PSF-102, PSF-103, and PSF-105), used in different concentrations, moderately stimulated nitrite production by macrophages. Three of five Trifolium pratense L. polysaccharides (PS62-3, PS62-4, and PS62-5) exhibited a significant specific effect on NO production. Rhamnogalactouronans from clover PS63-3 in all concentrations and from PS62-5 in a concentration of 100 μg/ml exhibited the highest activity, comparable to the NO-stimulatory activity of the reference LPS, while polysaccharide PS62-3 in a concentration of 40 μg/ml exhibited even higher activity.
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Affiliation(s)
- A A Ligacheva
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia
| | - M G Danilets
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia.
| | - E S Trofimova
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia
| | - E Yu Sherstoboev
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia
| | - V V Zhdanov
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia
| | - A M Guriev
- Siberian State Medical University, Tomsk, Russia
| | - M V Belousov
- Siberian State Medical University, Tomsk, Russia
| | - M S Yusubov
- Siberian State Medical University, Tomsk, Russia
- National Research Tomsk Polytechnological University, Tomsk, Russia
| | - A P Korzh
- Siberian State Medical University, Tomsk, Russia
| | - S V Krivoshchekov
- Siberian State Medical University, Tomsk, Russia
- National Research Tomsk Polytechnological University, Tomsk, Russia
| | - A M Dygai
- E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk, Russia
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Affiliation(s)
- Ye Gan
- 1.Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, P.O. Box 208057, New Haven, CT 06520-8057, USA.
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Abstract
Macrophages are key regulators of many organ systems, including innate and adaptive immunity, systemic metabolism, hematopoiesis, vasculogenesis, malignancy, and reproduction. The pleiotropic roles of macrophages are mirrored by similarly diverse cellular phenotypes. A simplified schema classifies macrophages as M1, classically activated macrophages, or M2, alternatively activated macrophages. These cells are characterized by their expression of cell surface markers, secreted cytokines and chemokines, and transcription and epigenetic pathways. Transcriptional regulation is central to the differential speciation of macrophages, and several major pathways have been described as essential for subset differentiation. In this review, we discuss the transcriptional regulation of macrophages.
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Affiliation(s)
- Derin Tugal
- Department of Medicine, University Hospitals Harrington Heart and Vascular Institute, Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine, University Hospital Case Medical Center, Cleveland, OH 44106, USA
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12
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Korns D, Frasch SC, Fernandez-Boyanapalli R, Henson PM, Bratton DL. Modulation of macrophage efferocytosis in inflammation. Front Immunol 2011; 2:57. [PMID: 22566847 PMCID: PMC3342042 DOI: 10.3389/fimmu.2011.00057] [Citation(s) in RCA: 227] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 10/16/2011] [Indexed: 01/25/2023] Open
Abstract
A critical function of macrophages within the inflammatory milieu is the removal of dying cells by a specialized phagocytic process called efferocytosis (“to carry to the grave”). Through specific receptor engagement and induction of downstream signaling, efferocytosing macrophages promote resolution of inflammation by (i) efficiently engulfing dying cells, thus avoiding cellular disruption and release of inflammatory contents, and (ii) producing anti-inflammatory mediators such as IL-10 and TGF-β that dampen pro-inflammatory responses. Evidence suggests that plasticity in macrophage programming, in response to changing environmental cues, modulates efferocytic capability. Essential to programming for enhanced efferocytosis is activation of the nuclear receptors PPARγ, PPARδ, LXR, and possibly RXRα. Additionally, a number of signals in the inflammatory milieu, including those from dying cells themselves, can influence efferocytic efficacy either by acting as immediate inhibitors/enhancers or by altering macrophage programming for longer-term effects. Importantly, sustained inflammatory programming of macrophages can lead to defective apoptotic cell clearance and is associated with development of autoimmunity and other chronic inflammatory disorders. This review summarizes the current knowledge of the multiple factors that modulate macrophage efferocytic ability and highlights emerging therapeutic targets with significant potential for limiting chronic inflammation.
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Affiliation(s)
- Darlynn Korns
- Division of Cell Biology, Department of Pediatrics, National Jewish Health Denver, CO, USA
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Abstract
One hundred and fifty years have elapsed since the original discovery of the microglial cell by Virchow. While this cell type has been well studied, the role of microglia in the pathology of many central nervous system diseases still remains enigmatic. It is widely accepted that microglial-mediated inflammation contributes to the progression of Alzheimer's disease (AD); however, the precise mechanisms through which these cells contribute to AD-related inflammation remains to be elucidated. In the AD brain, microglial cells are found in close association with amyloid beta (Abeta) deposits. Histological examination of AD brains as well as cell culture studies have shown that the interaction of microglia with fibrillar Abeta leads to their phenotypic activation. The conversion of these cells into a classically 'activated' phenotype results in production of chemokines, neurotoxic cytokines and reactive oxygen and nitrogen species that are deleterious to the CNS. However, microglia also exert a neuroprotective role through their ability to phagocytose Abeta particles and clear soluble forms of Abeta. These cells have been documented to play integral roles in tissue repair and inflammation, and in recent years it has been appreciated that this cell type is capable of facilitating a more complex response to pathogens by changing their activation status. A variety of new findings indicate that their role in the central nervous system is far more complex than previously appreciated. In this review we discuss the role of microglia in the normal brain and their phenotypic heterogeneity and how this may play a role in AD-related pathophysiology. We touch on what is known about their ability to recognize and clear Abeta peptides as well as more controversial topics, including various activation states of microglia and the ability of peripheral macrophages or monocytes to infiltrate the brain.
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Affiliation(s)
- Shweta Mandrekar
- Alzheimer’s Research Laboratory, Department of Neurosciences, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Gary E. Landreth
- Alzheimer’s Research Laboratory, Department of Neurosciences, Case Western Reserve University, Cleveland, OH 44106, USA
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